Improvement in car-axle lubricators



T. C. HARGRAVE.

Car-Axle Box.

No. 42,577. I I Patented May 3, 1864.

THOMAS C. HARGRAVE, OF BOSTON, MASSACHUSETTS.

IMPROVEMENT IN CAR-AXLE LUBRlCATOP tS.

Specification forming part of Letters Patent No. 42,577, dated May 3, 1864.

To all whom, it may concern.-

Be it known that I, THOMAS (J. HARGRAVE, of Boston, in the county of Sufi'olk and State of Massachusetts, haveinvented a certain new and useful Improvement in Lubricators for Oar-Wheels; and I do hereby declare the fol lowing to be a full, clear, and exact description thereof, reference being bad to the accompanying drawings, and to the letters of reference marked thereon, in which- Figure l is a vertical section of the lubricator through the line a; m, Fig. 2; and Fig. 2 is a vertical section through the line 3 3 Fig. 1.

My invention and improvement consists in the combination and arrangement of an outsides prin g with the lubricating wheel or roller, so as to allow of the adjustment of the lubricating-wheel without opening the journal box, as hereinafter to be more fully set forth.

a is the car-wheel. b is the journal of the car-wheel axle. c is the lubricating wheel or roller. (1 is the support to which the lubricating-wheel is attached. a is a rod connecting the lubricatingwheel, by means of the support 01, with the springf, outside of the journal-box. g is the oil or other lubricating substance. h is the lid or door of the journal-box, by means of which admission is obtained to the inside of the journal-box for replenishing the oil or other lubricating substance when necessary. i is a nut for adjusting the lubricating-wheel from the outside of the journalbox. j is the housing of the journal-box, and k is a chamber for containing the end of the support (1 and the rod 0, said chamber having a free communication with the interior of the journal-box.

Upon the lower part of the rod 6 is cut a screw-thread. The rod is then screwed into a hole drilled into the support 07, so that the rod may be readily detached from the support and the lubricating wheel or roller conveniently removed from the journal box when required. The pressure of the spring f may be regulated at will by means of the nut 17, and keeps the lubricating wheel (r roller always in contact with the journal, thus furnishing a constant supply of oil or other lubricating substance to the journal. The housing j and chamber 7c are cast in one piece with an opening or communication between them for the end of the support (1 to pass through and sut" ficientlylarge to allow the support to move freely up and down as it is acted upon by the spring f, with which it is connected by the rod c.

Having thus fully described my invention, what I claim, and desire to secure by Letters Patent, is-

The combination and arrangementof the outside spring, f, the rod 6, the support d, and the lubricating wheel or roller 0 with the journal b and housing j, substantially as and for the purpose set forth. 7

T. O. HARGRAVE.

Witnesses:

(J. P. Gnarls, Jr., J. H. FERGUSON. 

